Useful Searches

Bell XP-77

Known as the 'Tri-4' ---- shorthand for 400hp,
4000lbs, 400mph. Described as 'an engine with a saddle on it'. Plagued by noise and vibration it led to nothing and the whole program was scrapped on 2 December 1944.
Source: Fighters of the United States Air Force
Temple Press/Aerospace